Seed yield, economics, sustainability and soil fertility as influenced by long-term nutrient management in soybean (Glycine max)sunflower (Helianthus annuus) cropping system in Vertisols
DOI:
https://doi.org/10.59797/ija.v60i2.4464Keywords:
Crop productivity, Cropping system, Nutrient management, Soil fertility, Soybean, Sun- flower, System productivity, VertisolsAbstract
A field experiment was conducted during 19992011 , on fixed site at Latur, to assess the nutrient requirement of soybean [Glycine max (L.) Merr.]sunflower (Helianthus annuus L.) cropping system with different combinations of organic and inorganic nutrient management in Vertisols. Twelve treatment combinations were applied on crop- Ping system basis tor rainy (kharif) season soybean followed by winter (rabi) sunflower. Application of 100% rec- ommended NPK + FYM 5 t,'ha to kharif soybean and 100% recommended NPK to rabi sunflower recorded higher seed yield of soybean (2.33 t/ha), sunflower (I .44 kg/ha) and total system productivity in terms ot sunflower- equivalent yield (3.33 Vha). This combination also showed higher production efficiency (16.7 kg/ha/day) sustain- able-yield index (0.50), and net monetary' returns (+41.1 x 103/ha), and was statistically similar to the application of 150% NPK to both the crops in sequence. Application of FYM 5 Vha continuously over the period of 13 years along with 100% NPK to kharif soybean and 100% NPK to rabi sunflower in sequence improved the soil fertility in terms of organic carbon, available nitrogen, phosphorus and potassium.References
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