EFFECT OF ORGANIC AND INORGANIC FERTILIZER ON GROWTH AND YIELD OF BUSH BEAN (BARI JHAR SHEEM-1)

Abstract

The experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University during the period from November 2021 to February 2022 under AEZ 28 (Madhupur tract) for assessing the effect of different organic and inorganic fertilizers doses on the growth and yield of Bush bean. The experiment comprised a single factor comprising seven treatments viz. T 1 = 100% RCF + 0 t VC ha ii -1 ; T 2 = 75% RCF + 2 t VC ha -1 ; T 3 = 75% RCF + 4 t VC ha -1 ; T 4 = 75% RCF + 6 t VC ha -1 ; T 5 = 50% RCF + 2 t VC ha -1 ; T 6 = 50% RCF + 4 t VC ha -1 ; T 7 = 50% RCF + 6 t ha -1 . This experiment was laid out in a randomized complete block design (RCBD) with three (3) replications. Data were collected on different aspects of growth, yield attributes, and yield of bush bean including soil properties and nutrient contents. The results revealed that treatment T 4 = 75% RCF + 6 t VC ha -1 ] exhibited its superiority compared to other inorganic fertilizers with different doses of vermicompost treatments in terms of yield of bush bean. Treatment T 4 [75% RCF + 6 t VC ha -1 ]

also showed the tallest plant (42.65 cm), the maximum number of branches plant -1 (14.29), highest number of flower plant -1 [T 4 (13.79), the highest number of pod plant -1 (24.33), maximum pod length

(16.20 cm), maximum weight of pods plant (147.23 g), maximum pod yield (6239.8 g), highest pod yield (13.14 t ha -1 ), maximum stover yield (5.43 t ha -1 ) than other treatments in this experiment. On the other hand, treatment T 5 [50% RCF + 2 t VC ha -1 ] returned with 7.37% lower yield than treatment T 6 which was significantly the lowest compared with other treatments under this study. In the case of soil properties, the highest soil organic carbon (0.85%) and the maximum soil pH (6.17) were recorded from treatment T 4 in post-harvest soil. Additionally, the highest available P content in soil (23.0 ppm) and the maximum potassium content in soil (0.13 meq. /100 g soil) was recorded from the treatment T 4 containing chemical fertilizer and vermicompost. Vermicompost (6 t ha -1 VC) + (75% RCF) application seemed promising for producing higher pod yield of bush bean and maintaining soil productivity.