This study was conducted in Pokhara, Kaski, Nepal in 2023 to investigate the effects of different pinching types and okra varieties on various growth and yield parameters. Treatments were arranged under a two-factor Randomized Complete Block Design (RCBD) with three replications. The treatments includes two okra varieties (Arka Anamika and Parbati) and 4 pinching types (apical bud pinching (P1), ABP along with 1 leaf pinching (P2), and ABP along with 2 leaf pinching (P3) and control (P4)). Parbati has exhibited a higher plant height (80.78 cm) than Arka Anamika (72.35 cm). Similarly, the P4 pinching type resulted in the tallest plant (85.91 cm). The P1 pinching type demonstrated the highest number of primary branches (4.87), while the control plots had the lowest (3.00). Arka Anamika showed a higher leaf count (40.77) than Parbati (37.19). Notably, the P1 recorded the highest leaf count (43.41), followed by P2 (37.19), with the control plots showing the lowest leaf count (32.76). The findings reveal the significant impact of pinching treatments on yield. Pinching type P1 produced the highest yield of 15.45 mt/ha, whereas the control group yielded the lowest at 9.31 mt/ha, which was comparable to the yield observed for pinching type P3 at 10.83 mt ha-1. P1 also exhibited the highest number of pods per plant (15.90). Varieties and pinching methods exhibited notable interactions in average pod weight, diameter, and length. P1 displayed the widest pods (5.97 cm), whereas P2 had the longest (13.18 cm). Additionally, it can be noted that P3 yielded the heaviest pods at 16.16g when compared to P2, which yielded 14.09 g. Pinching treatments significantly influenced number of days to flowering, with P3 demonstrating the longest duration. Economic analysis was performed for evaluating technical efficiency, facilitating informed and sustainable decisions. Economically, P1 demonstrated superior performance, yielding a higher gross return of NPR 540,808.3, a net return of NPR 418,708.3, and a benefit-cost ratio of 4.43.

Ethiopia is considered as the possible origin and center of diversity for okra. Therefore, this study was conducted with the objectives of determining the genetic distance between indigenous okra collections and exotic commercial varieties and assessing genetic diversity of okra genotypes. The field experiment was conducted at Dire Dawa in 2016 using 14 indigenous collections and 11 exotic varieties in 5 x 5 triple lattice design. Data were collected on 9 and 29 qualitative and quantitative traits, respectively. The genetic distance measured by Euclidean distance ranged from 3.1 to 12.6 with a mean of 7.2. The highest genetic distances were observed between indigenous okra collections and exotic varieties viz. Guba-12 and NamdHari (12.6) followed by Guba-12 and Vellayani (12.3) and Mythri and Guba-12 (11.8). Dendrogram constructed by Unweighted Pair-group Method with Arithmetic Means grouped the 25 genotypes into seven major clusters in which the three clusters (Cluster II, III and V) were solitary, consisted of one genotype each, Cluster I consisted of six Indian commercial varieties, Cluster IV comprised of seven genotypes (four indigenous okra collections, one variety from USA and two from India), while Cluster VI and VII comprised of 5 and 4 indigenous okra collections, respectively. This study revealed the presence of wide genetic diversity among indigenous okra collections and exotic commercial varieties.

Sustainable agricultural production depends on increasing crop productivity while preserving soil health and reducing environmental risk. The purpose of this study was to evaluate the potential of biochar (10 t ha-1) based organic and inorganic fertilizer for increasing okra productivity through a field experiment conducted in Gajuri, Dhading. A 130 m2 area was divided into six treatment groups, each with four replications, using a Randomized Complete Block Design. The following were the treatments: i) inorganic fertilizer (RF); ii) biochar plus inorganic fertilizer (BF); iii) biochar plus vermicompost (BVC); iv) biochar plus poultry manure (BPM); v) biochar (BC); vi) control; neither biochar nor fertilizer (CK). The recommended rates of urea, di-ammonium phosphate (DAP), and muriate of potash (MOP) were applied to the mineral NPK fertilizers in RF and BF. The rate whereby organic fertilizers were applied was 200 kg N ha-1. Plots treated with biochar and various fertilizer groups were compared in terms of growth and yield efficiency. The BVC treatment was found to exhibit poorer growth performance in terms of plant height, number of leaves, primary branches, and nodes compared to the combination of biochar and poultry manure. Fruit output rose by 170% over CK (7.13 mt ha-1) and by 53.26% over RF (12.58 mt ha-1) after BPM treatment (19.28 mt ha-1). While BF and RF did not significantly differ in terms of growth characteristics, BF outproduced RF by 29% and CK by 126.79% in terms of pod yield. BF and BPM offered greater financial rewards than alternative treatments.

This research was conducted to overcome the problem of slow and erratic emergence in okra and to find out the effects of priming on germination, growth performance and yield in okra at Research Field of Nepal Polytechnic Institute (NPI) Bharatpur-11, Chitwan, Nepal (April-July, 2019). Arka Anamika variety was used for experiment. The experiment was laid out in Randomize Complete Block Design with 5 treatments and 4 replications, i.e. T1 (hormonal priming with IBA), T2 (hydro priming with fresh tap water), T3 (halo priming with NaCl), T4 (chemo priming with liquid urea) and T5 (un-primed seeds). Field experiment results showed that priming proved effective in improving germination percent except the chemo priming, reducing the mean germination time (MGT), improving the growth parameters (plant height, number of branches, plant canopy and number of leaves) and improving yield contributing characters like fruit length, fruit diameter as compared to un-primed seeds. The highest and lowest germination percentages were found in hydro priming and hormonal priming respectively while better growth performance in hormonal and chemo priming. Similarly, hormonal and hydro priming resulted in higher yield. Hence, it is suggested that seed priming is important to improve the overall germination, growth performance and yield in okra.