Higher Dry Grain Research Articles

EFFECT OF RICE-STRAW COMPOST FERTILIZER ON THE YIELD PERFORMANCE OF SULAWESI LOCAL AROMATIC RICE IN INDONESIA

A field experiment evaluated the effect of different doses of composted organic fertilizer made from rice straw on the yield of three local aromatic rice varieties of Luwu Regency in the safe growing season (rainy season). The local aromatic rice varieties were Ngappa, Sassa, and Latimojong varieties, and four doses of composted organic fertilizer from rice straw, namely 0, 4, 8, and 16 tons/ha, were used as treatment variables. The experiment was laid out in a Completely Randomized Block Design (CRBD) with two factors and three replications. At harvest, data were collected on various characters that contributed to the yield of aromatic rice. The results showed no characters were affected by the interaction of variety and compost dosage. Ngappa variety produced the highest dry grain yield per hectare with 3,834 kg/ha, while the highest average production of local Sulawesi aromatic rice was with the application of 16 tons per hectare of rice straw compost in this experiment which produced 4,241.78 kg of paddy per hectare.

The Effects of Using Liquid Organic NPK Fertilizer for Rice Plant Growth and Production (Oriza sativa L.)

This research aims to determine the appropriate concentrations of nitrogen, phosphorus, and potassium (NPK) in liquid organic fertilizer (LOF) and to determine the appropriate dose of NPK and LOF concentrations for the growth and yield of rice plants. The research was conducted in Mertajati Village, Sausu Subdistrict, Parigi Moutong Regency, Indonesia, from August to December 2019. The study used a two-factor randomized block design (RBD). The first factor is the dose of NPK, which consists of three levels, i.e., NPK 200 kg/ha-1, NPK 400 kg/ha-1, and NPK 600 kg/ha-1. The second factor is the concentration of LOF, which also consists of three concentration levels, i.e., without LOF, 2.5% LOF, and 5.0% LOF. The results revealed that the effects of LOF addition were the same for each dose of NPK and increasing the dose of NPK required an increase in the concentration of LOF. A dose of 400 kg ha-1 NPK fertilizer resulted in better growth and a higher yield, indicated by taller plants, higher panicles (19.53 panicles), and higher dry grain production (7.69 ton/ha-1). The application of 2.5% liquid organic fertilizer resulted in better growth and a higher yield, indicated by taller plants, a higher number of tillers, faster flowering, more panicles per clump (19.72 panicles/clump-1), a higher number of grains per panicle, a higher pithy grain weight (30.26 grams/1000 grains), and higher yields (7.79 tons/ha-1).

Addition of biochar to urea and urine fertilizer for improving soil chemical properties and maize yield in acid upland, East Lampung

Some studies have shown the ability of biochar in nutrient retention, including N such as urea and urine. The objective was to evaluate the effect of addition of biochar to urea/urine on the soil chemical properties and maize yield in acid upland East Lampung. The study was conducted at the Research station of Indonesian Soil Research Institute, East Lampung, from February to May 2016. The study used a randomized block design 4 replications, with treatments: 1) urea, 2) biochar (BC) + urea, 3) BC + urea (dissolved), 4) BC + urine and 5) urine. The parameters measured were soil chemical properties and maize yields. The results showed that the addition of biochar on urea and urine had soil chemical properties significantly better than without biochar. Urine could be applied with biochar. The highest dry grain was obtained from BC + urea (7.49 t ha−1) and dissolved BC + urea (7.15 t ha−1) compared to the others treatment (5.11 to 6.05 t ha−1). The application of BC + urine had a higher dry grain 12% compared to the urine without biochar treatment. Application of BC + urea, whether dissolved or not, is more effective to be applied in acid upland in East Lampung because it has soil chemical properties and yield better than BC + urine.

Effect of differences in soil tillage and application of organic fertilizers on soil water content and yield of upland rice

The research objective was to increase upland rice yield and balancing it with efforts of land conservation to maintain sustainable land productivity. It has been conducted in the research station of Lampung Assessment Institute for Agricultural Technology (AIAT). The treatments were arranged in a factorial randomized block design with three replications. The treatment in the main plot was the method of tillage whereas the subplot was organic fertilizers. The tillage methods were: (1) Maximum tillage and without ditch, (2) Minimum tillage with ditch. The organic fertilizer treatments were control, bio urine plus 10 L ha−1, bio urine plus 20 L ha−1, biodecomposer 10 L ha−1, and biodecomposer 20 L ha−1. The upland rice variety was Inpago 12. The variables observed were soil water content, growth and yields of rice. The results showed that the minimum soil tillage with ditch provided a higher soil water content than the maximum tillage. Likewise, the application of liquid organic matter from local microorganisms (biodecomposer) increased soil water content compared to the control. Application of bio urine plus 20 L ha−1 significantly increased plant height and yield. The highest dry grain was obtained in the treatment of minimum tillage and biodecomposer 20 L ha−1.

PENGARUH PEMUPUKAN NPK MAJEMUK DAN UREA TERHADAP PERTUMBUHAN DAN HASIL PADI GOGO

Research on improving fertilization technology of upland rice is still being developed. This research aimed to examine the most efficient technology fertilization (NPK and Urea) to increase the productivity of upland rice. Research had been conducted in upland rice fields, located at Ploso Kerep, Indramayu District, in MT I 2012/2013 designed in split plot with three replications. The main plot was the level of NPK fertilizer, consisting of (A) Without NPK (0 kg / ha), (B) NPK 100 kg / ha, (C) NPK 200 kg / ha, and (D) NPK 300 kg / Ha, and as subplots are (1) Without Urea 0 kg / ha, (2) Urea 100 kg / ha, (3) Urea 200 kg / ha and (4) Urea 300 kg / ha. The results showed that NPK and Urea can improve growth and yield of upland rice. NPK fertilizer with 300 kg / ha has produced the highest number of panicles per hill (12.07 grain panicles), while at Urea 200 kg / ha resulted in the highest panicle number of 11.54 grain panicles. The highest dry grain yield (5.78 t / ha) was obtained at NPK 300 kg / ha with an average increase of 100 kg / ha NPK reaching 370 kg / ha. The combination of NPK 300 kg / ha and with 300 kg urea / ha, the weight of 1000 urea 300 kg / ha can be increased to 7.58% when compared without fertilizing.

Response of Black Madras Purple Rice to Pruning and Application of Unitas Super Liquid Organic Fertilizer

Indonesian rice yields are still relatively low. One of the efforts to increase the yield of rice plants is to trim the foliages before flowering, in addition to the application of ‘Unitas Super’ liquid organic fertilizer (LOF). The study was carried out in the Lubuk Lintah Village, Padang City in May - September 2017. The aim of the study was to investigate the effectiveness of pruning, as a source of forage, and the concentration of ‘Unitas Super’ liquid organic fertilizer in improving rice yields. The experiment was arranged in split plot design with main plots consisting of 2 levels, namely pruning at 45 days and without pruning. The subplots consisted of 3 concentrations of ‘Unitas Super’ liquid organic fertilizer, namely 0 ml L -1 , 50 ml L -1 , and100 ml L -1 . All treatments were replicated 3 times. Data were analyzed statistically using the F test at 5% and tested using LSD at 5%. According to the results of the observations, it can be concluded that pruning reduced the weight of 1000 seeds and panicle length, but did not reduce the yield of harvested dry grain and harvest index. Application of ‘Unitas Super’ liquid organic fertilizer did not significantly increase the growth and yield of Black Madras purple rice. The highest dry grain yield was 4.04 t ha -1 observed in plants sprayed with 50 ml L -1 ‘Unitas Super’ liquid organic fertilizer without pruning treatment.

Application of Azolla and intermittent irrigation to improve the productivity and nutrient contents of local black rice variety

Black rice is a local rice variety that contains a high level of anthocyanin pigment. Anthocyanin has been reported to be very effective in reducing cholesterol levels as well as cancer cell invasion. One of the main problems in rice cultivation is lack of water. System of Rice Intensification (SRI) has shown to be able to increase rice productivity by increasing the number of tillers. This system is known as a water-efficient cultivation. Other rice cultivation barrier is related to the use of nitrogen fertilizer. One of replacement of nitrogen fertilizer is by adding azolla. The objective of this research was identifying growth and yield of organic black rice with intermittent irrigation and application of azolla. The plant material used was black rice Cempo variety from Sleman, Yogyakarta. This experiment utilized 4 dosages of azolla as the first treatment: 100 gm-2, 200 gm-2 and 400 gm-2. The second treatment was water supply consisted of continuous flooded 2 cm; flooded 2 cm every 3 days; flooded 2 cm every 6 days. The results depicted that the application of azolla was able to increase the growth of black rice. Azolla of 200 gm-2 and 400 gm-2 and intermittent 3 days to 6 days generated higher dry grain, anthocyanin and antioxidant. Azolla 200 gm-2 with intermittent irrigation 3 days could be a good combination to improve plant growth, yield and properties of local black rice.

Diversity in a pea (Pisum sativum) world collection for key agronomic traits in a rain-fed environment of Southern Europe

The marked underutilization of pea ecotype and old cultivar genetic resources need be reversed by producing information on elite germplasm and diversity patterns for key agronomic traits. This study generated such information for a world collection of 223 ecotypes or old cultivars of P. sativum subsp. sativum subdivided into 19 regional pools (each represented by 9–15 entries) and one reference pool of 11 locally-adapted varieties from France, Spain and Germany. The collection was evaluated for grain yield, seed protein content, straw biomass, phenology and other agronomic and morphological traits in a spring-sown, water-limited environment of Northern Italy. Variation within ecotype/old cultivar germplasm pools was at least two-fold greater for seed size and protein content and seven-fold greater for other traits relative to variation between pools, and was particularly large within pools from Central Europe, Near East and United Kingdom. The traditional germplasm, compared with improved variety material, tended to display higher dry grain yield (1.11 vs. 0.85 t/ha) and straw biomass, later crop maturity, smaller seed, and similar protein content. Traditional germplasm from Central Europe combined outstanding grain yield and total biomass with high seed protein content. High grain yield characterized, inter alia, the germplasm pools from Ukraine and Spain, the latter also featuring high protein content. Several ecotype/old cultivar accessions out-performed (P < 0.05) the best-ranking varieties for grain yield or protein content. Patterns of phenotypic variation were poorly related to geographic origin of germplasm pools, while highlighting the distinctness of improved variety germplasm.

EVALUASI VARIETAS PADI SAWAH PADA DISPLAY VARIETAS UNGGUL BARU (VUB) DI KABUPATEN KARAWANG, JAWA BARAT

&lt;p&gt;More than 80 high yielding varieties of rice have been released nationally by IAARD to support acceleration of national rice production. Inpari 13 was the one of some new variety that has been released at 2011 and have superior trait i.e early maturity and high yielding. Inpari 13 and some another new variety would disseminated at ICM program at this year. That variety needed to evaluated on Display Area and cultivated by using ICM technology and its compared with old variety as well as Ciherang. This study was to evaluate performance and yield of some new varieties compared old varieties specifically in Dem area. The experiment was conducted in West Java AIAT Dem Area, District Jayakerta, Karawang. The study was done on DS 2011 (Mei 2011-Januari 2012) by using randomized block design with 3 replications. Six varieties were tested i.e Ciherang, St. Bagendit, Inpari Inpari-7, Inpari-10, Silugunggo and Inpari-13. Integrated Crop Manajemen system i.e legowo 2:1, optimal fertilization, and IPM were used at this research. The results showed that there were signifant differences between varieties in all characters except leaf color index. Ciherang has the highest plant height (97,59 cm). Inpari-7 has the highest number of productive tillers and 100 grains weight (25 tillers/clump and 2,8 grams) and the least number of empty grains (7 grains/ panicle). St. Bagendit has the highest number of pithy grain (183 grains/panicle). Silugonggo was the early maturity but it’s resistant to stems brown planthopper (almost had a crop failure). The highest dry grain harvest was owned by Situ Bagendit (8,10 t.ha 1) followed Ciherang (8,08 t.ha-1), Inpari-13 (8,07 t.ha-1), Inpari-7 (7,52 t.ha-1), Inpari-10 (6,71 t.ha-1), and Silugonggo (2,05 t.ha-1).&lt;/p&gt;

Compensatory and susceptive responses of cowpea genotypes to infestation by &lt;i&gt;aphis Craccivora&lt;/i&gt; koch.

The aim of the study was to estimate yield loss to10 selected genotypes of cowpea as a result of Aphis craccivora infestation during the vegetative phase of the crop. There were two trials with four replications. The first trial serving as the control was sprayed at the seedling, flowering andpodding stages against insect pests with lambda cyhalothrin (PAWA®). The other trial was sprayed only at flowering and podding stages. The cowpea seedlings of the second trial were infested with five four-day-old aphids per seedling two weeks after planting. The aphids were allowed to form colonies and fed on the seedlings until symptoms of damage were observed. When the susceptible seedlings became stunted with distorted leaves and yellowing of leaves at two weeks after infestation (28 days after planting), aphids were controlled. The results showed that aphids’ infestation delayed flowering and maturity of genotypes of cowpea. With the exception of early flowering genotypes all the medium to late flowering genotypes produced higher dry grain yield in infested plots than the control plots. The trend was not different from the production of dry biomass. The results of the present study implies that control of aphids infestation inearly maturing cowpea genotypes should not be delayed up to two weeks after infestation or 28 days after planting. Aphid’s infestation period for studies in susceptive response in medium to late maturing genotypes should go beyond 28 days after planting probably up to 35 days afterplanting.