Dry Grain Research Articles

Unlocking the Potential: Impact of Plant Growth Regulators on Hybrid Rice Growth, Grain Yield and Harvest Index

Aim: This research focused on rice, especially in Asia, and examined how plant growth regulators, including hormones and synthetic compounds, affect crucial plant processes. The findings strongly support the use of foliar Indole-3-Acetic Acid (IAA) application to enhance hybrid rice growth, grain yield, and harvest index, promising advancements in agriculture.
 Study Design: Randomised Block Design with 11 treatments.
 Place and Duration of Study: The study, conducted at the Student Instructional Farm of C. S. Azad University of Agriculture & Technology in Kanpur, aimed to investigate the impact of foliar application of plant growth regulators on rice growth and yield during 2021 and 2022.
 Methodology: The experiment employed a rigorous randomized block design, testing various treatments involving the foliar application of IAA (25 & 50 ppm), IBA (25 & 50 ppm), NAA (25 & 50 ppm), Ascorbic Acid (50 & 100 ppm), and Kinetin (5 & 10 ppm). The profound effects of these different regulator concentrations were observed at key developmental stages, including tillering, anthesis, dough, and maturity.
 Results: Significant improvements in growth parameters, such as leaf and stem dry weights per plant, along with total leaf area per plant, were evident with the application of IAA at 50 ppm. Moreover, a notable increase in grain yield per plant and harvest index was observed at maturity, primarily with the foliar spray of IAA at 50 ppm, followed closely by IAA at 25 ppm. This consistent trend was also observed in yield-related attributes.
 Conclusion: The use of Indole-3-acetic acid (IAA) significantly impacted plant growth and yield, including leaf and stem dry weights, leaf area, grain yield, and harvest index, showing promise for enhancing hybrid rice production.

Pengaruh Dosis Sekam terhadap Pertumbuhan dan Hasil Tanaman Padi (Oryza sativa L.) Varietas Inpari 32

The research aims to determine; (1) the response of growth and yield of rice plants to various doses of roasted husks, and (2) doses of roasted husks that have a positive effect on the growth and yield of rice plants of the Inpari 32 variety. The study was carried out for 3 (months) months, starting from January to March 2022. This research was carried out with an experimental approach using a Randomized Block Design (RBD), 6 doses of burnt husk treatment and repeated five times, so that there were 30 experimental units. The variables observed were plant height, number of tillers per clump, number of productive tillers per clump, number of shoots per clump, panicle length, number of pithy grain per panicle, weight of 1000 grains of grain, yield of dry grain harvested per clump and per plot. The data obtained in the study were analyzed by analysis of variance (ANOVA) if there was a significant effect, then Duncan's multiple-distance further test was carried out at a significance level of 5 percent. The results showed: (1) Burned husk treatment had a significant effect on plant height, number of tillers per clump, number of productive tillers per clump, number of panicles per clump, number of pithy grain per panicle, weight of 1000 grains of grain, yield of dry grain harvested per clump. and per plot, but had no significant effect on panicle length. and (2) The highest harvested dry grain yields were obtained at doses of roasted husks of 4 and 5 tons/ha, namely 6.65 kg and 7.70 kg per plot or equivalent to 7.39 tonnes per hectare and 8.56 tonnes per hectare.

Prediction of uniaxial compressive strength of the Kızılkaya ignimbrite with variable properties using MRA and ANN, Cappadocia (Turkey)

Cappadocia in Turkey is an important region with emphasis on ethnic and historic structures and geological features. Because of volcanic eruptions, ash flow materials deposited at different levels. These different colored ignimbrite levels have a wide range of geomechanical properties. In the region, the Kızılkaya ignimbrite covers a very large area and is frequently used as building dimension stone in for the restoration of old historical buildings such as churches, caravansaries and mosques as well as new buildings. It contains tuffaceous matrix with some minerals and rock fragments. The rock has variable character. In this study, the relationship between petrographic and physico-mechanical properties of the Kızılkaya ignimbrite was investigated. Rate of change between uniaxial compressive strength and the other index properties of the rock was statistically examined utilizing multiple regression analysis (MRA) and Artificial Neural Network (ANN) methods. The study has shown that uniaxial compressive strength (UCS) of the ignimbrite can be successfully estimated by the use of dry unit weight, effective porosity, sonic velocity, and grain matrix ratio (GMR) parameters. A new UCS prediction equation is proposed in this paper for the ignimbrite with variable character. Since properties of the ignimbrite at different distances from the eruption area changes significantly, the approach presented in this study can be considered for the ignimbrites especially covering a large area with different welding degrees and grains.

Biochemical changes due to Pathogenesis in French beans (Phaseolus vulgaris l.) Infected by rhizoctonia solani Kuhn

French Bean (Phaseolus vulgaris l.) belongs to the family Fabaceae and is native to south america. French bean has evolved from wild growing vine distributed in the high lands of Middle america and andes. this important legume crop is grown for its dry grain and tender pods in north-Western India. this offseason crop can be successfully raised under Punjab conditions during winter season which fetches higher price in the market and economical to the farmers when there is no availability of green pods from high altitude. It is widely cultivated in tropics, sub-tropics and temperate regions. When bean plant infected by fungal, bacterial or any other pathogen, different alternations are observed. the present study was carried out in the department of Botany, darrang college to compare the biochemical changes occurring in bean plants growing in normal soil, and sterilized soil mixed with fungus rhizoctonia solani .

Growth and production of superior rice varieties in freshwater swampland at the Alabio Polder, Hulu Sungai Utara

The freshwater swampland is one alternative as a source of food production in Indonesia because it is quite fertile and vast about 25.20 million ha. Several limitations of this area includes unpredictable water regime, floods in the rainy season, and drought in the dry season. The objective of this study is to evaluate new high yielding varieties and planting system in the freshwater swampland. The experiments were carried out in the freshwater swampland of the Alabio polder area, Teluk Cati Village, Hulu Sungai Utara Regency covering an area of 5 ha, in the dry season in 2013 and 2014. In 2013 there were two kinds of treatment: planting system (2:1 and 4:1) and varieties (Ciherang, Inpari-1, Inpari-17, and Inpari-19). In 2014, the treatment were varities (Ciherang, Inpari-1, Inpari-17 and Inpari-30) and planted by jajar legowo planting 4:1. The treatments were implemented by randomized block design with 10 replication. This study indicates that high-yielding varieties can increase rice productivity and farmer income. Rice productivity in the two growing seasons ranges from 4.46 to 7.12 t ha−1 dry grain. The study concluded that at freshwater swampland, jajar legowo (2:1 and 4:1) was not significantly different. The new superior varieties of rice like Inpari-1, Inpari-17 dan Inpari-30 can increase the productivity and income of farmers at Teluk Cati Village. In 2013 n 2014, the yield of inpari varieties (1, 17, 19, 30) were higher than ciherang, average yield 5,91 t/ha. Rice farming on freshwater swampland is profitable (RC−1 3.09 and 2.78) and feasible (BC−1 2.09 and 1.78).

The effect of biofertilizer on increasing upland rice yield in rainfed rice field in boyolali

The low availability of nutrients is an obstacle to increasing rice productivity in rainfed rice fields. The application of a combination of biofertilizers and inorganic fertilizers was known to increase the efficiency of using inorganic fertilizers. This study aims to determine the effect of biofertilizers on the growth and yield of rice plants in a rainfed rice field. The study was conducted on rainfed rice fields in Banyusri Village, Wonosegoro District, Boyolali Regency from September to December 2013. A total of 6 biofertilizer products were used in this study, namely PR, RC, ST, AGR, BV and GLK. The rice variety used was Situ Patenggang. The study used a randomized block design with 9 treatments and each treatment was repeated 4 times. The nine treatments were: fertilization according to the recommendations of dry soil test device (P1); ½ dose of P1 (P2); P2 + manure (P3); P2 + PR (P4); P2 + RC (P5); P2 + ST (P6); P2+AGR (P7); P2+BV (P8); P2+GLK (P9). Planting using a 2:1 jajar legowo system with a spacing of 20 x 10 x 40 cm was carried out by direct planting of 4-5 seeds per hole. Biofertilizer application is carried out according to the instructions of each product. Parameters observed included: soil chemical status (N, P, K, C-organic, pH, CEC) before the study; plant growth (plant height, number of tillers and number of productive tillers); yield (weight of harvested dry grain and dry milled); and a simple farming analysis was carried out. The results showed that all combinations of biofertilizers with ½ recommended dose were effective in increasing rice yields but they could not match the yield of rice fertilized according to the recommended dose. The combination of fertilization using GLK biofertilizer showed the highest yield compared to other biofertilizers with an advantage of 48.05% compared to ½ recommended dose of fertilization.

Combination of inorganic and bio-organic fertilizer on growth and production of Paddy Rice (Oryza sativa L.)

The excessive use of inorganic fertilizers by farmers in Riau Province is quite worrying about the decline in soil quality. Based on this, this study aims to obtain the best combination dose of inorganic fertilizer N, P, K with bio-organic fertilizer on the growth and production of rice. The research was conducted experimentally using a completely randomized design (CRD) consisting of 6 treatments and 4 replications so that 24 experimental units were obtained with the treatments being tested were P0= 100% inorganic fertilizer + petroganic; P1= 100% inorganic fertilizer; P2= 100% inorganic fertilizer + 100% sludge compost; P3= 75% inorganic fertilizer + 100% sludge compost; P4= 75% inorganic fertilizer + 100% sludge compost + biofertilizer; P5= 50% inorganic fertilizer + 100% sludge compost + biofertilizer. The results showed that the application of a combination of inorganic fertilizers N, P, K with bio-organic fertilizers had not been able to increase plant height and weight of milled dry grain, but can give the same results as the application of 100% N, P, K on rice grain parameters and 1000 grain weight in a combination of 75% inorganic fertilizer, 4 tons/ha of compost, and 10 ml of biofertilizer.

ANALISIS HARGA GABAH KERING PANEN DAN HARGA BERAS PREMIUM TERHADAP NILAI TUKAR PETANI DI JAWA BARAT PERIODE 2019-2021

A measure of farmer welfare knowledge is determined by the farmer exchange rate (NTP). Factors that affect farmers' wealth are the price of harvested grain (GKP) and the price of premium rice. The purpose of this study is to illustrate the analysis of premium rice price at harvest dry grain (GKP) and farmer exchange rate (NTP). The sample used is the monthly time interval from January to December in the 2019-2021 range with 36 data for each variable. Data analysis comes from secondary data taken from the Central Bureau of Statistics (BPS) report using multiple linear regression analysis test method using the SPSS application. The results showed that the price of harvested dry grains (GKP) and the price of premium rice had a positive effect on farmer exchange rates (NTP). Key words: exchange rates, farmer, rice

The Effect of Selenium, Vitamin E, Vitamin A and Vitamin D3 Applications on Fertility in Awassi Sheep with Estrus Synchronization During the Breeding Season

The purpose of this study was to determine the effects of selenium, vitamin E, vitamin A, and vitamin D3 treatments on reproductive parameters in Awassi sheep fed solely dry grass and grain stubble during the breeding season with estrus synchronization. Seventy-five sheep were implanted with intravaginal sponges containing 20 mg of flugestone acetate for 9 days for estrus synchronization. On the day the sponges were inserted, the first group received an intramuscular injection of a supplement containing 200,000 IU of vitamin A, 30,000 IU of vitamin D3, and 20 mg of vitamin E, as well as a supplement containing 1 mg of sodium selenite and 60 mg of vitamin E. The second group was the control group, with no supplementary vitamin injected. On the day of sponge removal, the sheep received intramuscular injections of 500 IU PMSG and 250 mcg cloprostenol sodium in both groups. The sheep in the first group were given a second injection of the supplement on the same day that contained 20 mg of vitamin E, 30,000 IU of vitamin D3, and 200,000 IU of vitamin A. The sheep that showed signs of estrus were mated naturally after the estrus synchronization. Estrus rates were 86.11% and 85.29%, conception rates were 74.19% and 58.62%, pregnancy rates were 63.88% and 50%, lambing rates were 100% and 100%, and litter size was found to be 126.08% and 123.52% in Group I and II, respectively (P=0.858). Although there was no significant difference in the reproductive characteristics between the groups (P>0.05), Group I had a greater pregnancy rate and litter size. During the breeding season, it is believed that the regular application of vitamin and mineral supplements on a program basis in sheep fed only dry pasture and grain stubble contributed to fertility.

Determination of the effects of organic and chemical fertilization on grain yield and some agricultural characteristics of pea

Pea (Pisum sativum L.) plant, a legume species, is used as a vegetable for fresh consumption and frozen, canned or dried and processed and consumed as dry grain. The effects of organic fertilization, which is important for plant nutrition and soil fertility in pea cultivation, on grain yield and some agricultural characteristics were investigated. The experiment was carried out in the experiment field belonging to Selçuk University, Faculty of Agriculture, Prof. Dr. Abdülkadir AKÇİN Research and Application Station in 2021 according to the "Split Plots Experiment in Randomized Blocks" design with 3 replications. In the research, fertilizers were randomly placed in the main plots and varieties were randomly placed in the sub-plots. In the experiment, high yielding 16002, 16011, 16018, 16022 and Ultrello x Rondo genotypes suitable for fresh consumption and registered Betagreen pea variety were used as materials. Grain yield, some agronomic traits, protein yield and protein ratio were analyzed in the study. It was determined that the effects of chemical fertilizer and some organic fertilizer applications on all other traits examined in peas were statistically significant. According to the results of the research, the number of branches in pea plants was 3.18 pieces/plant (control) and 4.13 pieces/plant (chemical fertilizer), plant height was 45.89 cm (sheep manure) and 49.51 cm (chemical fertilizer), the number of pods was 14.31 pieces/plant (control) and 25.90 pieces/plant (chemical fertilizer), the number of grains in pods was 4.90 pieces (control) and 6.64 pieces (chemical fertilizer), the number of grains per plant was 70. 03 (control) to 172.20 (chemical fertilizer), hundred seed weight 29.30 g (control) to 33.22 g (chemical fertilizer), grain yield 128.75 kg da-1 (control) to 300.38 kg da-1 (chemical fertilizer), protein content 22.49% (control) to 23.12% (sheep manure) and protein yield 28.96 kg da-1 (control) to 67.91 kg da-1 (chemical fertilizer). The responses of genotypes to organic fertilizer applications showed differences. As a result, it was determined that organic fertilization in peas gave less grain yield than those grown with chemical fertilization, but protein content had higher values. This showed that organic fertilization is a sustainable and environmentally friendly option for pea cultivation.

Effect of Straw Compost (Oryza sativa L.) on Crop Production

Agricultural productivity depends mainly on soil fertility, particularly in intensified-paddy fields. Heavily relying on synthetic agrochemicals in intensified agriculture could be changed to regenerative agriculture utilizing cultivation wastes to achieve sustainable food production. Therefore, this study aims to analyze the effectiveness of rice (Oryza sativa L.) straw compost for intensified-rice cultivation. Rice straw compost from the previous planting season was composted on the field (in situ). The composting used “Effective Microorganisms version 4” (EM-4), which contains Lactobacillus sp., Rhodopseudomonas sp., Actinomycetes sp., Streptomyces sp., yeast, and cellulose-decomposing fungus. The test field used 4 tons of straw compost and treatments adopted from the local farmers’ planting style named Legowo 4:1. Observations on these treatments include the plant nutrients, plant contents, rice components, and yield production. The differences in the results were analyzed using the paired t-test. The results show that the application of straw compost provides a significant increase in dry grain weight, panicle length, and the number of grains per rice plant. However, the treatment did not give significant results on the clumps number and rice grain weight. Besides improving rice production, straw compost improved the C-organic, total N, and K levels in the soil. Based on this study, rice straw compost brings benefits for paddy cultivation as well as the reuse of agricultural waste in a simple way, especially in tropical lowland areas of Indonesia.

Control of iron stress in water-saturated tidal land using ameliorant and its impact on rice productivity

Fe stress is a problem in swamp lands that reduces the growth and yield of rice. Providing various types of ameliorants and selecting rice varieties are considered an effort to obtain high rice productivity in tidal land. The research aimed to study the effect of various ameliorants on rice growth and production, and to obtain high productivity of tolerant variety to iron stress at different locations of tidal land. The research was conducted in Karya Bakti Village (1°10'34.8" S and 104°09’31.1” E), Rantau Rasau, East Tanjung Jabung, Jambi. This study adopted a split-plot design with different types and doses of ameliorant as the main plots and several rice varieties as the subplots with three replications. The results showed that the application of ameliorant rice husk ash, coconut husk ash, empty bunch oil palm compost, and goat manure stimulated vegetative and generative growth. Meanwhile, the Inpari 16 Pasundan variety was proven to have better growth and higher production as described through plant height, fresh weight of shoots and roots, dry weight of shoots and roots, root length, number of productive tillers, number of grains per panicle, 1,000 grain weight, and harvested dry grain. The highest rice production was in the Inpari 16 Pasundan variety, 9.3 tons ha-1 (low-Fe) and 7.6 tons ha-1 (high-Fe). The combination of rice husk ash (0.25 tons ha-1) + coconut husk ash (0.25 tons ha-1) + empty bunch oil palm compost (0.75 tons ha-1) + goat manure (0.75 tons ha-1) was the best combination to increase rice productivity. Inpari 16 Pasundan is considered a tolerant variety on tidal land with high-Fe stress. The interaction between ameliorants and varieties was significant on plant height at ages 2 and 4 weeks after planting at low-Fe, number of productive tillers at high-Fe, root length at low-Fe and high-Fe, 1,000-grain weight, and number of grains per panicle at low-Fe, and harvested dry grain at low-Fe and high-Fe.
 Keywords: B-type tidal fields, Fe stress cultivation, organic ameliorant, tolerant rice variety, water-saturated cultivation

USE OF THE WORKING BODY OF THE UNIVERSAL VIBRATORY MILL FOR DRYING GRAIN MATERIAL

One of the most perspective directions of intensification of heat and mass transfer in the processes of drying plant materials and increasing the energy efficiency of drying plants is the application of a vibration field for mixing grain material while moving in the drying chamber. The analysis of existing vibration installations has revealed that the most promising is the usage of vibratory grinding chambers with spatial circulation of material for the implementation of grain heat treatment, in particular drying. As a result, it is proposed to use the proven element base of a vibratory mill as a working body of which grinding chambers with spatial circulation of the load are used. The article presents the structural and technological scheme of a vibratory thermal drying unit, the structural parameters of the unit, and a mathematical description of the grain drying process. The obtained differential equations constitute a mathematical model of the nonstationary process of continuous drying of grain material and determine the change in time, parameters of grain and steam-gas mixture at the outlet of the grain drying chamber. The constructed mathematical model of the drying process makes it possible to determine the modes of heating and dehydration of grain material during circulation in a vibrating chamber with a conductive energy supply and partial vacuuming of the chamber, to expand the technological capabilities of the "vibrating mill" type installations. The graphical dependences of the temperature and moisture content of grain over time, the data for which were determined experimentally, are presented when a monolayer of grain of mass m is heated on a heating surface of area F at a stabilized surface temperature θn. In this work, the kinetics of drying and heating of grain were obtained, which were used to calculate the parameters of the vibrothermal drying unit. Also, using the results of the experiments, the performance indicators of the vibration dryer created on the basis of the grinding chamber of the vibrating mill were determined.

RICE (ORYZA SATIVA L.) INPARI 42 VARIETY GROWTH AND PRODUCTION IN RESPONSE TO BOKASHI AND PHONSKA NPK FERTILIZER

This study aims to investigate the optimum dosage of Bokashi and Phonska NPK fertilizer on the growth and production of the Inpari 42 rice variety. This investigation was conducted at the agricultural location of Ulu Mowewe Village, Mowewe District, East Kolaka Regency. The experiment used was the Split Plot Design (RPT). The factorial pattern consists of two treatment factors, namely the Bokashi (B) treatment factor with three levels, namely: B1 = 1.2 kg/plot, B2 = 2.4 kg/plot, and B3 = 4.8 kg/plot, and the treatment factor Phonska NPK, which consists of three levels, namely N1 = 0.18 kg/plot, N2 = 0.36 kg/plot, and N1 = 0.54 kg/plot. Parameters observed in the study were: plant height, number of tillers, number of leaves, leaf length, leaf width, panicle length, number of panicles or clumps, number of grain or panicles, number of filled grain or panicles, the weight of 1000 grain grains, dry milled grain yield (GKG) per plot, Milled Dry Unhulled grain yield (GKG) per conversion. The data were processed using variance (ANOVA) and followed by the Least Significant Difference Test (LSD). Based on the results of the study, it can be concluded that the combined dose of Bokashi and Phonska NPK fertilizer significantly affected plant height (cm), the number of tillers, the number of leaves (strands), leaf length (cm), leaf width (cm), panicle length (cm), number/panicle, total grain/panicle, total grain/panicle, and yield of dry milled grain (GKG)/slot (kg), the yield of dry milled unhulled grain (GKG)/conversion (tons) The dose treatment of Bokashi and Phonska NPK showed that the optimum combination dose of Bokashi and Phonska NPK for the growth and yield of Inpari 42 rice was B3N2 (4.8 kg and 0.3 kg/plot).

Nano-zinc and plant growth-promoting bacteria is a sustainable alternative for improving productivity and agronomic biofortification of common bean

Background and aimsNano-zinc (Zn) fertilizer is an easily adaptable and environmentally safe alternative option that can effectively improve growth, yield and biofortification of common bean. Plant growth-promoting bacteria (PGPBs) could promote plant growth and nutrients availability in sustainable manner. Therefore, this study aimed to investigate the influence of foliar nano-Zn application in association with seed co-inoculations of PGPBs on growth, yield, biofortification and Zn use efficiencies in common bean cultivation. Two field experiments were performed with seven co-inoculations of PGPBs and three foliar nano-Zn doses applied 50% at R5 and 50% at R8 stages of common bean to determine plant height, shoot dry matter, grain yield, Zn concentration and uptake in shoot and grains, Zn partitioning index, daily Zn intake and Zn use efficiencies for agronomic biofortification.ResultsThe combined foliar nano-Zn application and co-inoculation of R. tropici + B. subtilis enhance grain yield, leaf chlorophyll index, total protein content, grain Zn concentration and uptake, daily Zn intake, Zn use efficiency, applied Zn recovery and Zn utilization efficiency in common beans in 2019 and 2020 cropping seasons. Foliar nano-Zn application at a dose of 1.5 kg ha−1 increased plant height, shoot dry matter, shoot Zn uptake, Zn partitioning and agro-physiological efficiency under co-inoculation with R. tropici + B. subtilis in both cropping years.ConclusionsThe treatments with foliar nano-Zn application at a dose of 1.5 ha−1 and co-inoculation with R. tropici + B. subtilis improved performance, chlorophyll index, protein content, grain yield, and Zn efficiencies that can lead to better biofortification of common bean in tropical savannah. Therefore, it is recommended that applying nano-Zn via foliar along with co-inoculation of PGPBs could be the better option for productivity and biofortification of common bean.Graphical

Discharge of liquid and grains from a silo with multiple orifices

Using a multi-orifice cylindrical silo, the average flow rates Q1 and QN through one and N orifices, respectively, were first measured for the discharge of water or dry grains and then for the mixture. As expected, QN=NQ1 for monophasic discharges. Nevertheless, for the mixture, QN≪NQ1, and the effect becomes more notorious as N augments and when the grain size is decreased. A simplified continuum model of a flow through a dynamic porous medium, with hydrodynamic resistance that increases with N, is used to reproduce the experimental results. Additional analysis in a two-dimensional cell reveals interacting parabolic flow profiles of the immersed particles close to the orifices, with a reduction in the average velocities when N is increased, which helps to understand the non-additivity of the total flow rate.

Traits associated with higher productivity and resilience to drought-prone Mediterranean environments of coastal-lowland quinoa (Chenopodium quinoa Willd.)

Quinoa (Chenopodium quinoa Willd.) is an Andean crop that has been cultivated for over 7000 years in Andean South America. Among the five quinoa ecotypes identified, the coastal-lowland ecotype is distributed in central-southern Chile. Little is known about the phenotypic variability of this germplasm and its productive potential. In this work, we evaluated a panel of 99 self-pollinating genotypes of quinoa under rainfed and irrigated conditions in the Mediterranean area of central Chile. The aim was i) to evaluate the phenotypic variability of agronomic and leaf photosynthetic traits; ii) to assess trait responses to environmental conditions (rainfed and irrigated) and their heritability; and iii) to identify traits and genotypes associated with high yield potential and resilience in drought-prone environments. The selected genotypes were evaluated under rainfed (Hidango; 34° 06' S, 71°47' W) and irrigated (Santa Rosa; 36°31' S, 71°54' W) conditions, in two growing seasons (2016/17 and 2017/18). In the most favorable environment (Santa Rosa 2016), the shoot dry weight (shoot DW) and grain yield (GY) of the different genotypes, ranged from 655 and 2787 g m-2 (average 1440 g m-2) and from 45 and 452 g m-2 (average 244 g m-2), respectively. Under rainfed conditions (at Hidango), the shoot DW and GY were reduced by 75 % and 74 %, respectively, compared to Santa Rosa 2016, but still, some genotypes produced more than 100 g m-2, with < 70 mm of precipitation, evidencing a high drought tolerance. The harvest index (HI) and grain weight (TKW) were less affected by drought; compared to Santa Rosa 2016, the reduction was 8–18 % and 25–29 %, respectively, in 2016/17 and 2017/18. Days from sowing to flowering (DSF) and from flowering to maturity (DFM) varied among genotypes and were negatively correlated with GY and HI. Under rainfed conditions, the fluorescence parameters F0 and Fm were reduced by 30 % during flowering and by 50 % during grain-filling, compared to irrigated conditions. The HI and TKW showed the highest heritability (0.69) and were highly correlated with GY in all environments. This study showed that traits associated with higher productivity and resilience of quinoa genotypes in rainfed Mediterranean environments were early maturating and with high HI, and TKW. Finally, a set of genotypes presenting a high stress tolerance index (STI), and therefore higher tolerance to drought conditions, were identified and are candidates for further research focused on the selection of parentals for more advanced breeding stages.

Soybean Tolerance to ultra-low doses of dicamba: Hormesis or not

The widespread use of dicamba across the soybean growing regions of the United States resulted in increased off-target movement of this herbicide to susceptible vegetations. There are speculations that a drift of sublethal (ultra-low) doses of dicamba can enhance soybean growth and yield through a phenomenon called hormesis. Field studies were conducted during 2018 and 2019 to determine whether soybean growth and yield can be enhanced with ultra-low doses (0.0112–56 g ae ha−1) of dicamba, applied at three growth stages (V2, R1 and R2). There was no evidence that the ultra-low doses of dicamba (0.0112–56 g ae ha−1) increased any of the observed parameters, irrespective of the application timing. Doses of 0.56 g ae ha−1 and lower did not have a negative impact on plant dry matter, height and grain yield, even if causing visible symptomology. The estimated effective doses for 50% reduction in various growth parameters and yield (ED50) indicate that soybean is more sensitive at the R1 compared to the V2 or R2 stages. The estimated visual injury threshold that caused 5% yield loss were 53, 36 and 21% for V2, R1 and R2 stage of dicamba exposure, respectively. The proposed “No Observed Adverse Effect Level” (NOAEL), which is a safe exposure threshold, ranged from 0.0003 to 0.033 g ae ha−1. However, efforts should be made to avoid dicamba drift to susceptible soybean as there is no evidence of enhanced growth and yield with the ultra-low doses.

Senyawa Bioaktif Bioinsektisida Daun Sirsak (Annona mucirata) dan Pengaruhnya terhadap Keanekaragaman Artropoda pada Tanaman Padi (Oryza sativa L.)

The aim of the study was to determine the content of bioactive compounds in soursop leaf bioinsecticides and their effect on the diversity of arthropods in rice. This research began from July to October 2022 at the Plant Protection Laboratory and Bioscience Laboratory of the Jember State Polytechnic and Rice Cultivation Land in Balung Lor Village, Balung District, Jember Regency. Arthropod samples were observed visually using Sweep Net Trap, Yellow Pan Trap, Sticky Trap and Pitfall Trap. The GCMS test results detected 29 compounds in soursop leaves. The highest compounds as repellent and antifeedant detected were palmitic acid, oleic acid and acetic acid at 18.39%, 17.40%, 13.83%. The result of probit analysis of LC95 toxicity was 28.92%. The number of individuals in the bioinsecticide treatment was 2036 individuals, 32 species consisting of: 10 herbivores, 13 predators, 3 parasitoids, 4 pollinators, and 3 detrivores. Fipronil numbered 1198 individuals, 26 species consisting of: 10 herbivores, 10 predators, 2 parasitoids, 3 pollinators, and 1 detrivore. Diversity index (H`) shows moderate category in both treatments, dominance index (C`) does not show dominance in both treatments, species richness index (R) in both treatments is moderate, species evenness index (E) is evenly distributed in both treatments and Sorensen The Similarity Index (ISS) is classified as the same with a value of 89.66%. The yield of dry grain in the soursop leaf bioinsecticide treatment was higher (38.25 g per clump) than Fipronil 33.29 gr per clump.

An Interdisciplinary Assessment of Biochemical and Antioxidant Attributes of Six Greek Vicia sativa L. Varieties.

Common vetch (Vicia sativa L.) is one of the most cultivated feed crops with extensive agricultural diversity and numerous cultivars. This study concerns the first-time investigation of the dry plant biomass and grains of six vetch cultivars to define the detailed fingerprint of their phenolic and fatty acid content, along with their respective antioxidant potencies. The results revealed a substantial variation in the feed quality traits among the tested Vicia sativa varieties, highlighting the crucial role and influence the genotype plays in the achievement of high-quality livestock nutrition. Among the six varieties tested, Istros and M-6900 displayed a particularly intriguing phytochemical profile characterized by elevated phenolic content, significant antioxidant potency and remarkably high fatty acid indices. These findings are indicative of the great potential of these varieties to function as suitable candidates for incorporation into farm animal diets either in the form of dry biomass (hay) or as a grain feed additive.