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Bāpatla, India

Anitha S.,Kerala Agricultural University | Mathew J.,Kerala Agricultural University | Mathew J.,Cashew Research Station | Abraham C.T.,Kerala Agricultural University
Indian Journal of Agronomy | Year: 2010

Field experiments were conducted at Agricultural Research Station, Mannuthy during 2004 and 2005 to fine tune the technology of dual culturing of rice (Oryza sativa) and green manure crops to ensure the supply of required quantity of organic manure to dry seeded rice in a cost effective manner. Two green manure crops viz., horse gram (Macrotyloma uniflorum (Lam) Verdc) and cowpea [Vigna unguiculata (L.) Walp.] sown along with rice were incorporated at 45 days after sowing by three methods viz., using cono weeder, spraying 2,4-D, and allowing self decomposition due to flooding at the onset of monsoon. Two levels of nitrogen (100 and 75% of recommended dose of N i.e. 90 kg) were super imposed over them. Dual cropping of cowpea with dry seeded rice could add about 12 t/ha of organic manure and resulted in a weed suppression of 69-75% and reduction in labour requirement for weeding (40 man-days/ha). This system guarantees 25% nitrogen saving (22.5 kg/ha) with 11% yield enhancement and increase in profitability (Rs 14,562/ha). The study revealed that, cowpea can be effectively incorporated by spraying 2, 4-D with effective weed control. The peak nitrogen release from concurrently grown cowpea coincides with the critical growth stages of rice, the panicle initiation stage, and thereby ensures availability of N at the critical stage. Source


VenkataRamana K.T.,Cashew Research Station | Kumar B.P.,Andhra University | Chinnabbai Ch.,Cashew Research Station | Babu K.H.,Andhra University
Acta Horticulturae | Year: 2015

Among the 40 germplasm lines of cashew at Cashew Research Station, Bapatla, evaluated since 1997, the highest mean annual nut yields have been recorded with T.No 275 (26.15 kg tree-1) followed by T.No. 228 (14.76 kg tree-1). However, cumulative nut yields are found highest with BLA 39-4 (66.48 kg tree-1) followed by T.No 5/1 (60.04 kg tree-1) after 9 annual harvests. Mean nut weight was highest in Priyanka (11 g) followed by T.No 15/4 (8.90 g). Shelling percentage ranged from 25.65 to 36.17% across the lines evaluated. Source


VenkataRamana K.T.,Cashew Research Station | Kumar B.P.,Andhra University | Chinnabbai Ch.,Cashew Research Station | Babu K.H.,Andhra University
Acta Horticulturae | Year: 2015

Studies on hybridization and evaluation are under progress at the Cashew Research Station, Bapatla. F1 hybrid seedlings have been under evaluation since 1997. Performance of each block is evaluated for nut yields. Among the F1 progenies of 1997 H-36 had the highest cumulative nut yield of 68.30 kg/tree and in 1998 hybrids H-94 had the highest yield of 21.3 kg tree-1. Among 48 F1s of 1999, highest yield was recorded with H-132 which had 16.65 kg tree-1. In the hybrid progenies of 2000 and 2001 highest cumulative yields were recorded with H-216 and H-254 which yielded 23.7 and 22.55 kg tree-1 respectively. Source

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