The field experiments were carried out at College of Agriculture Farm Rewa and Regional Agricultural Research Station, Kuthulia on Vertic haplurtalfs Soils, during rabi 1981-82, to study the influence of planting dates on Phenology and heat unit relationships under late sown conditions. The wheat cultivar sonalika was planted on 15 Dec., 23 Dec, 31 Dec. 1981 and 7th Jan. 82 at R.A.R.S., Kuthulia and on 16 Dec, 23 Dec, 30 Dec. 1981 and 6 Jan. 82 at College of Agriculture Farm. The results indicated that the requirement of accumulated heat units decreased with delayed planting. Besides growing degree days a unit incorporated the bright sunshine hours is also utilized (H.T.U.). A phenothermal index was also introduced (the AHU per growth day). It was nearly constant irrespective of planting dates and sites. The heat use efficiency decreased from 16.29 to 12.56 X 10"-* q/ha/GDD in case of D, to D4 respectively. A regression for predicting the maturity date for wheat crop using heat units accumulated upto flowering initiation for the Vindhyan region of Central India is developed.
Field experiments were conducted on deep black soil of Mamurabad farm, Oilseed Research Station, Jalgaon (Maharashtra). Sesame cv. JLT-7 was sown during 2008,2009 and 2010 to find out suitable combination of soil and foliar application of urea and diammonium phosphate for seed yield maximization and remunerative treatments. Result revealed that, soil application of RDF + foliar spray of 2 per cent urea twice at flowering and pod formation stages significantly improved the yield attributes viz., number of capsules plant-1 and number of seeds capsule-1. These attributes contributed in producing significantly higher seed and oil yields and also proved more remunerative over soil application of RDF alone.
Potato is one of the world’s fourth most important food crop after rice, wheat and corn. More than one billion people consume potatoes worldwide and it is the part of the diet of half a billion people in developing countries. In terms of area, India ranks third in the world after China and Russia and second in production after China. Afield experiment on effects of different fertilizer doses on yield and its attributes on potato was conducted during Rabi season for three consecutive years with an objective to prevent the indiscriminate use of fertilizers by the potato growers. The experiment was laid out in Randomized Block Design with seven treatments and 3 replications. The results revealed that potato treated with T2= 100% RDF i.e. 150 kg N, 60 kg P2O5 and 120 kg K2O recorded a yield of 15.33 t/ha which was at par with that recorded by T3 i.e. 150% RDF (13.74 t/ha). The fertilizer dose of 100% RDF was found beneficial for improving yield, quality and storability of potato tubers. The gross monitory return (Rs. 1,83,397/ha) and net monitory return (Rs. 98,401/ ha) were found to be maximum in treatment T2. B:C ratio was found to be maximum in T2.
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