Development of fertilizer recommendation for the cropping pattern potato-boro-<i>T. aman</i> in irrigated medium highland condition under AEZ -9

Abstract

The experiment was carried out in the Old Brahmaputra Floodplain soil at the farmer's field of Farming System Research and Development (FSRD) site, Kushumhati, Sherpur under Sherpur district in the medium high land under AEZ-9 for the three consecutive years 2003-06 to determine economic combined dose of organic and inorganic fertilizers for Potato-Boro-T.aman cropping pattern. Six treatment management packages including one farmer's practices, and one fertilizer control were tested. The other four treatments were soil test based (STB) fertilizer dose for moderate and high yield goals (MYG and HYG), STB based fertilizer dose for HYG plus 5 t/ha cowdung (IPNS) and fertilizer dose for Fertilizer Recommendation Guide'97 (FRG '97). Average of three years' results showed that recommended fertilizer dose based on the FRG '97 was more economic than all other fertilizer doses for the whole pattern. But the treatment Integrated Plant Nutrition Systems based on fertilizer management with cowdung for high yield goal produced the maximum grain and straw yields in the first crop. Application of cowdung had no significant effect on the yield of succeeding crops. The variable cost was higher for the treatment consisting of cowdung due to additional cost of cowdung. The highest marginal rate of return 1626% was obtained from recommended fertilizer based on the FRG '97.

Tuber yield and nutrient balance of potato (Solanum tuberosum L.) Cultivation as influenced by different nutrients management under AEZ-28

“…Crop residues integration added some extra nutrient to soil which might have increased the number of tubers hill -1 (Table 3). These results are in agreement with that of Ali et al (2009). They recorded the highest number of tubers hill -1 when nutrient was applied @ N 132 P 27 K 105 S 19 Zn 4 CD 5000 kg ha -1 in potato-Boro rice -T. Aman rice cropping pattern.…”

“…These results are in agreement with that Hossain et al (2008). They stated that maximum tuber weight hill -1 was obtained by using STB nutrient N 147 P 32 K 54 S 18 Zn 4 B 1.02 kg ha -1 fertilizer in potato-fallow-T. Aman rice cropping pattern and Ali et al (2009) recorded the highest number of tuber weight hill -1 when nutrient was applied @ N 132 P 27 K 105 S 19 Zn 4 CD 5000 kg ha -1 in potato-Boro rice -T. Aman rice cropping pattern. Moreover, crop residues were used in the present study while the previous authors did not.…”

Maximizing Yields, Nutrient Uptake and Balance for Mustard-Mungbean-T. Aman Rice Cropping Systems through Nutrient Management Practices in Calcareous Soils

“…On the other hand, in this study apparent balance of N was negative in all the treatment and the depletion ranged from -29.0 to -162 kg N ha -1 yr -1 . The result is comparable with potato-boro-T. aman rice systems, the apparent N balance showed negative (-72.9 to -177 kg ha -1 yr -1 ) (Ali et al, 2009b).…”

Fertilizer Recommendation for Four Crop Based Cropping Pattern: Potato- Boro- T. Aus-T. Aman Under AEZ – 11

“…The highest grain yield (3.95 t ha -1 and 3.98 t ha -1 ) was obtained from the treatment T 6 where 25% extra NPK was applied where control treatment produced the lowest grain yield (2.12 t ha -1 and 2.17 t ha -1 ). Ali et al (2009) reported the highest grain yield from soil test value for HYG and lowest from control treatment. Saha et al (2016) also documented higher yield from 20% more than the STB dose in potato-maize-T. Aman cropping pattern of AEZ-3.…”