Evaluation of organic fertilizer on cabbage production at Mymensingh and Jamalpur, Bangladesh

Organic fertilizer (OF) has positive effects on soil, especially soil fertility and productivity. Two experiments were conducted at the farmer’s field of Mymensingh and Jamalpur to observe the effect of organic fertilizer on cabbage production during rabi season 2018. There were seven fertilizer treatments viz: T1: RCF (N150 P40 K100 S16 Kg ha-1), T2: 85% RCF, T3: 70% RCF, T4: 85% RCF + 3 t ha-1 OF, T5: 85% RCF + 1 t ha-1 OF, T6: 70% RCF + 3 t ha-1 OF and T7: 70% RCF + 1 t ha-1 OF. The experiments were laid out in a RCBD (Randomized Complete Block Design) with three replications. The average fresh yield at Mymensingh ranged from 34.5 to 60.0 t ha-1 with the highest yield of 60.0 t ha-1 from treatment T4 (85% RCF + 3 t ha-1 OF). At Jamalpur, the average yield ranged from 31.5 to 56.3 t ha-1 and the highest yield of 56.3 t ha-1 was recorded from treatment T4 (85% RCF + 3 t ha-1 OF). The lowest yield was found from treatment T3 in both locations. The percent fresh yield increased over control (T1), was 42.85 and 40.04 in Mymensingh and Jamalpur, respectively. The highest gross margin is Tk. 534507, which was obtained from treatment T4 (85% RCF + 3 t ha-1 organic fertilizer). The highest MBCR 3.05 (average of two locations) was obtained from the same treatment T4 (85% RCF + 1 t ha-1 organic fertilizer). The result indicated that applying organic fertilizer and 85% recommended dose of chemical fertilizer is more profitable than applying chemical fertilizers only.

Nitrogen effect on the growth and yield contributing characters of Binadhan-19

The experiment was conducted at the BINA sub-station, Rahmatpur, Barishal, during the period from April 2020 to August 2020 to investigate the effect of nitrogen on the yield of transplant Aus rice cv. Binadhan-19. The experiment comprised four levels of nitrogen viz (a) N0 (zero nitrogen), (b) N1 (90 kg N/ha), (c) N2 (110 kg N/ha) and (d) N3 (130 kg N/ha). Nitrogen fertilizer was applied at two splits. The experiment was laid out in a randomized complete block design with three replications. Results revealed that plant height, effective tiller, non-effective tiller, flag leaf length, filled gran, unfilled grain and 1000 grain weight were increased with increasing nitrogen doses till 110 kg N ha-1. Furthermore, the highest grain weight was recorded in 110 kg N ha-1 due to superior performance of yield contributing characters of BInadhan-19. A positive correlation was found between grain yield and total dry matter production. The experimental results concluded that 110 kg N ha-1 would be the best dose for higher gain yield in Binadhan-19 in aus season.

Organic fertilizer’s proportion in soil: Evaluating growth and yield of potato

The productivity of organic farming has mainly focused on its relative crop yields than the proportions of organic matters in soil. However, organically cultivation changes crop yields at the same time it depends on types of crops grown. Here, we provide a pot experiment on the rooftop in Latin Square Designs (LSD) with a Diamant variety of potato and four treatment combinations to evaluate variety’s growth and yields. T0: Control, T1: 100% organic fertilizer, T2: 75% organic fertilizer+25% soil and T3: 50% organic fertilizer+50% soil was used for the present study with three replications. Our analysis showed the tallest (23.78 cm) plant was in T2 followed by T1 and T3 (23.37 cm and 23.14 cm, respectively). T2 produced the maximal (76.44) number of leaves per stem followed by T2 and T3 (73.44 and 74.11, respectively). T1 generating the maximal number (6.89) of tubers per hill was significant than all the other treatments. The highest weight (19.13 gm) per tuber per hill was examined in T2 followed by T1 and T3 (17.05 gm and 12.91 gm, respectively). T2 produced the utmost tuber length (3.78 cm) followed by T1 and T3 (3.39 cm and 3.23 cm, respectively. 75% organic fertilizer+25% soil has concluded the potential to be grown successfully and the most suited treatment for production of potato (Diamant) in coastal areas of Bangladesh.

esponse of Sweet pepper (Capsicum annuum L.) in saline region of Bangladesh

Salinity is one of the major issues that lead to a reduction in crop productivity. This study aimed to investigate the response of sweet pepper (Capsicum annuum L.) to saline soil. The research was conducted in Agricultural Research Field at Noakhali Science and Technology University during 2018-19 with two sweet pepper varieties as treatment named Red Army (V1) and California Wonder (V2). The results indicated that there were significant variations between the two varieties in different parameters of growth as well as yield performance. The result showed that between the treatments V2 (California Wonder) gave the higher yield ie., 10.65 ton/ha while V1(Red Army) produced 9.61 ton/ha. Moreover, the taller plants and longer fruit were obtained from the V2 which were 32.43 cm and 8.23 cm respectively. Even among the other parameters, V2 gave higher growth and development than V1. Furthermore, average single fruit weight/plant was recorded 76.33 g in California Wonder (V2) whereas Red Army (V1) provided 74.16 g. The finding of the experiment indicated that the overall better performance could be obtained from V2 California Wonder variety of sweet pepper. This study evaluated the varietal performance of two varieties and it can be said from the experiment that the California Wonder is the best variety for cultivation in saline region in Bangladesh.

Effects of varieties and boron on growth and yield of summer tomato

A study was conducted to investigate the effects of varieties and boron (B) levels on growth and yield of summer tomato (Lycopersicon esculentum Mill.) at the Germplasm Centre in the Department of Horticulture, Patuakhali Science and Technology University, Patuakhali during the period from May, 2018 to September, 2018. Fifteen treatments were comprising (i) three summer tomato varieties (BARI hybrid tomato 4, 8 and 10) and (ii) five levels of boron as boric acid (0, 1, 2, 3 and 5 kg B ha-1) in all combinations. Randomized complete block design with three replications was used in the earthen pot (0.79 ft3) experimentation. The effects of varieties and boron levels showed significant variations (p <0.05) on growth and yield of summer tomato at different days after transplanting. Among the varieties at final count plant-1, delayed flowering (32.6 days), the highest plant height (93.8 cm), number of leaves (99.93), no. of branches (26.27), no. of flower clusters (18.53), no. of flowers (82.73), no. of fruits (51.87), longest fruit length (41.87 mm) and maximum fruit width (48.0 mm), weight of individual fruit (55.71 g) and total weight of fruits (2892.88 g) were observed in BARI hybrid tomato 8. In contrast, the lowest plant height (87.3 cm), no. of leaves (86.47), no. of branches (24.06), no. of flower clusters (15.87), no. of flowers (66.07), no. of fruits (37.33), weight of individual fruit (43.60 g) and total weight of fruits (1630.57 g) were found in BARI hybrid tomato 4; and early flowering (31.93 days), shortest fruit length (33.07 mm) and maximum fruit width (34.60 mm) were noticed in BARI hybrid tomato 10. Among the boron levels at final count plant-1, early flowering (29.67 days), the maximum no. of flower clusters (18.44), no. of flowers (89.11), no. of fruits (46.22) and total weight of fruits (2364.29 g) were recorded in 2 kg B ha-1 treatment; the maximum plant height (96.50 cm), no. of leaves (102.89), no. of branches (28.11), longest fruit length (42.89 mm) and maximum fruit width (46.78 mm) and weight of individual fruit (51.74 g) were obtained in 3 kg B ha-1 treatment. Conversely, delayed flowering (34.67 days), minimum plant height (83.50 cm), no. of leaves (87.56), no. of branches (21.78), no. of flower clusters (15.89), no. of flowers (63.56), no. of fruits (40.33), shortest fruit length (31.78 mm) and minimum fruit width (34.67 mm), weight of individual fruit (47.47 g) and total weight of fruits (1936.00 g) were recorded in control (0 kg B ha-1) treatment. Our results suggest that the inclusion of B (2–3 kg ha-1) with the current fertilization practice will enhance the growth and yield of summer tomato grown at AEZ (agro-ecological zone) 13 while BARI hybrid tomato 8 could be recommended as one of the promising varieties.