Highest Green Cob Research Articles

Effect of Zinc Fortification on Quality, Yield and Economics of Sweetcorn

A field experiment was performed at Agricultural College, Bapatla, ANGRAU, Guntur during kharif season of 2020 to evaluate the efficacy of zinc nutrition on quality, yield and economics of sweetcorn. Experiment was carried out in Randomized Block Design and comprising of nine treatments with three replications. The results disclosed that application of recommended dose of fertilizers along with soil application of 10 kg ha-1 Zn EDTA + two foliar sprays of nano zinc @ 250 ppm at 20 & 40 DAS registered remarkably higher protein content (12.98%) and zinc content (34.59 ppm) in kernel which was considered to be superior over the remaining zinc management practices tried. Also, highest green cob (12,638 kg ha-1), green fodder (19,674 kg ha-1), stover yield (7,590 kg ha-1) and gross returns (₹ 1,93,360 ha-1) was recorded from the treatment with soil application of Zn EDTA @ 10 kg ha-1 + two foliar sprays of nano zinc @ 250 ppm at 20 & 40 DAS along with RDF over control. However, highest net returns (₹ 1,38,664 ha-1) and benefit cost ratio (2.74) was recorded with RDF + ZnSO4 @ 25 kg ha-1 (Soil) + Nano ZnO @ 250 ppm at 20 and 40 DAS (Foliar spray). The effectiveness of Zn EDTA compared to ZnSO4 is responsible for the higher quality parameters and yield of sweetcorn but due to its higher cost, Net returns and B;C ratio are maximum for the plots treated with ZnSO4 making it more economically viable.

Evaluation of seedling age and nutrient sources on phenology, yield and agrometeorological indices for sweet corn (Zea mays saccharata L.)

The field experiment was conducted during Kharif season of 2020 at Agronomy farm of Faculty of Agriculture, Wadura, SKUAST-K to study the influence of age of seedling and sources of nutrients on phenology, yield and agrometeorological indices for sweet corn. The experiment included two factors viz. age of seedlings (12, 22 and 32 days old seedling) and sources of nutrients (control, RDF, 50 percent RDF + FYM @ 12 t ha−1, 50 percent RDF + vermi-compost @ 4 t ha−1 and 50 percent RDF + poultry manure @ 2 t ha−1) tested in RCBD with three replications. Transplanting 12 days old seedlings required maximum number of days to attain different phenological stages, thereby accumulated maximum heat units followed by 22 days old seedlings. While as transplanting 22 days old seedling recorded significantly highest HUE, HTUE, PTUE and HyTUE and consequently resulted in the highest green cob and biological yield compared to other ages of seedlings. Among various sources of nutrients, application of 50 per cent RDF + poultry manure @ 2 t ha−1 took maximum number of days to attain various phenophases thereby accumulated maximum heat units and registered highest HUE, HTUE, PTUE and HyTUE followed by application of 100 per cent RDF.

Effects of Varieties and Intra Row Spacing on Yield of Maize (<i>Zea mays</i> L) Under Supplementary Irrigation in an Arid Region of Western Ethiopia

Determination of optimum plant population and the use of improved varieties in combination with appropriate agronomic practices are important components of maize production package for maximizing productivity. The study was conducted 2017- 2018 under supplementary irrigation at 9o 10' 00'' N' latitude and 35o22' 00′′ E longitude, Western Ethiopia, to determining the effects of variety and intra-row spacing on yield of maize (Zea mays L.), the same application of irrigation water. The experiment was conducted in factorial arrangement of four intra-row spacing (20, 25, 30 and 35cm) with three maize varieties (BH546, Shone and BHQPY-545) in RCBD. The interaction of variety and intra-row spacing was highly significant (P<0.01) on yield components and yield of maize. The highest (1.75) average number of ears per plant was recorded from varieties BH546 and BHQPY-545 at 35cm intra-row spacing. The highest (35cm) ear length was recorded from BH546 at 35cm intra-row spacing. Generally, leaf area, stand count, ears per plant, ear length, and ear diameter showed a decreasing trend with decreasing intra-row spacing. Based on these results, it can be tentatively concluded that the variety BH546 could be used at plant density of 53,333 plants ha-1 and (25cm) intra-row spacing is best to get the highest green cob yield of maize under supplemental irrigation during the off-season in the study area.

Effect of Different Organic Manures on the Yield, Nutrient Uptake and Quality of Baby Corn

A field experiment was conducted at Agricultural College and Research Institute, Killikulam during Purattasipattam (September - October) of 2017 to study the effect of different organic manures on the yield, nutrient uptake and quality of baby corn. Baby corn G 5414 was used as test variety. The experiment was laid out in randomized block design with three replications. Treatments consisted of three different organic manures viz., farmyard manure, poultry manure and vermicompost with or without panchagavya as foliar spray. Significantly, the highest green cob and green fodder yield was obtained with the application of 100% N through poultry manure (10920 kg ha-1 and 29797 kg ha-1, respectively) and it is superior to the rest of treatments. Application of 100% N through poultry manure + 3% Panchagavya spray at vegetative and tasseling stage recorded higher green cob and green fodder yield (10418 kg ha-1 and 28636 kg ha-1, respectively). This was followed by the application of 50% N through farmyard manure + 50% N through poultry manure + 3% Panchagavya spray at vegetative and tasseling stage and application of 50% N through farmyard manure + 50% N through poultry manure which registered higher green cob and green fodder yield (10401 kg ha-1 and 28498 kg ha-1, respectively, 10354 kg ha-1 and 28389 kg ha-1, respectively). These treatments were on par with each other. Higher nutrient uptake (NPK) and quality of baby corn was obtained with the application of 100% N through poultry manure. Higher gross return, net return and B: C ratio was recorded with the application of 100% N through poultry manure (` 248197 ha-1, ` 199647 ha-1 and 5.1, respectively). Application of 100% N through poultry manure was found to be the desirable organic nutrient management practice for realizing higher yield, nutrient uptake and quality of baby corn.

Growth, yield and economics of rabi sweet corn (Zea mays L., var. saccharata Sturt) as influenced by different spacing and fertilizer levels under south Gujarat conditions

A field experiment was conducted during rabi 2011 at College Farm, Department of Agronomy, College of Agriculture, Navsari Agricultural University, Navsari to assess the response of rabi sweet corn (Zea mays L. var. saccharata Sturt) to spacing and fertilizer levels under south Gujarat conditions. The experiment comprising 16 treatment combinations consisting of four levels of plant spacing (60×15, 45×20, 30×30 and 60×30 cm) and four fertility levels (60–30, 90–45, 120-60 and 150-75 kg N-P2O5/ha). Plant spacing of 60×30 cm, 45×20 cm and 60×15 cm attained significantly higher plant height compared to 30×30 cm. While stem diameter and number of leaves per plant were not influenced by different spacing levels. The sweet corn plants exhibited significantly maximum values of yield attributes viz., cob length, cob girth, under spacing of 45×20 cm. Number of cobs per plant and cob yield per plant were higher under spacing of 60×30 cm. Highest green cob yield was recorded at spacing of 45×20 cm closely followed by 30×30 cm. The highest net returns (Rs. 60568/ha) and BCR (5.52) were recorded under plant spacing of 45×20 cm. The growth of sweet corn in terms of plant height, number of leaves per plant and stem diameter were maximum with application of 150-75 kg N-P2O5/ha. The sweet corn plants exhibited maximum values of yield attributes viz., number of cobs per plant under 150-75 kg N-P2O5/ha and found at par with those recorded under 120-60 kg N-P2O5/ha. Whereas cob length and cob girth were under 120-60 kg N-P2O5/ha and found at par with those recorded under 150-75 kg N-P2O5/ha. Application of 150-75 and 120-60 kg N-P2O5/ha significantly increased green cob yield over 90–45 and 60–30 kg N-P2O5/ha. Economic evaluation of fertility levels revealed that the highest net returns of Rs. 59509/ha and BCR of 5.46 were recorded with application of 120-60 kg N-P2O5/ha. Thus, from the present study, it seems quite logical to conclude that higher production and net returns from rabi sweet corn (var. Madhuri) can be secured by sowing the crop at 45×20 cm spacing and fertilizing with 120-60 kg N-P2O5/ha on clayey soil under south Gujarat conditions.

Response of sweet corn to irrigation and fertilizer treatments on clayey soils under climate change conditions

Study of response of sweet corn (Zea mays L. var. saccharata Sturt) to irrigation levels (0.6, 0.8, 1.0 IW:CPE i.e. irrigation water: cumulative pan evaporation) and fertilizer doses (control, 90–45, 12060, 150-75 kg N-P2O5/ha), was conducted during rabi seasons of 2011 and 2012 on medium black clayey soil of Junagadh (Gujarat). Results indicated that irrigation at 0.8 IW:CPE being at par with 1.0 IW:CPE enhanced growth and yield attributes and thereby green cob and fodder yield along with higher net returns and B:C ratio over irrigation at 0.6 IW:CPE. Findings with the application of 120-60 kg N-P2O5/ha was reflected at par with 150-75 kg N-P2O5/ha improved growth and yield attributes and ultimately higher green cob and fodder yields with higher net returns and B:C ratio over control and 90–45 kg N-P2O5/ha. Therefore, irrigation at 0.8 IW:CPE and fertilizer dose of 120-60 kg NP2O5/ha might be applied for higher yield and economical realization from rabi sweet corn along with judicial use of water and fertilizer under changing climate scenario.

Biological Efficiency of Legume Intercrops in Baby Corn (Zea MaysL.)

Field experiments were conducted at the Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore to study the effect of crop geometry, intercropping and topping on the productivity and biological efficiency of baby corn. Crop geometry (60 x 20 cm and 75 x 16 cm) and intercropping (baby corn alone, baby corn + fenugreek (greens), baby corn + fodder cowpea) were assigned to main plots. Four topping practices (detasseling alone, topping beyond 9th, 10th and 11th internodes) was allotted to sub plots. The results revealed that baby corn raised at 75 x 16 cm produced higher green cob yield over 60 x 20 cm. Intercropping systems did not have positive influence on yield of baby corn. The highest green cob yield was obtained with topping beyond 10th internode. Higher baby corn equivalent yield (BEY) was obtained with baby corn + fenugreek grown under 75 cm row spacing combined with topping beyond 10th internode. Biological use efficiency as measured by the indices like LER, AHER, LEC, MER and RNRI were higher with baby corn + fenugreek grown under 75 cm row spacing combined with topping beyond 10th internode. However, baby corn intercropped with fodder cowpea at 75 cm row spacing combined with topping beyond 10th internode registered the higher ATER than the other treatment combinations.

Weed Smothering Efficiency and Productivity as Influenced by Crop Geometry and Intercropping in Baby Corn (Zea MaysL.)

Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore to study the effect of crop geometry and intercropping on the weed smothering efficiency and productivity of baby corm. Two levels of crop geometry (60 x 20 cm and 75 x 16 cm) and two intercrops (baby corn alone, baby corn + fenugreek (greens), baby corn + fodder cowpea) were studied. Results revealed that crop geometry levels did not alter the weed population but altered the weed TDMP and weed smothering efficiency (WSE). Baby corn raised at 75 x 16 cm crop geometry registered lower TDMP of weeds. The weed smothering efficiency (WSE) was higher under baby corn intercropped with fenugreek and fodder cowpea at 75 cm row spacing. Baby corn raised at 75 x 16 cm produced higher green cob yield over 60 x 20 cm spacing. Intercropping in baby corn did not have positive influence on yield of baby corn. However, the baby corn equivalent yield (BEY) was higher with baby corn + fenugreek grown under 75 cm row spacing.