Seed Yield and Some Agricultural Traits of Cowpea (Vigna unguiculata L. Walp.) Grown with Different Densities as a Double Crop

Abstract

In addition to the good adaptation of high temperatures and poor soils, cowpea (Vigna unguiculata L.) can be a good source of forage for livestock. This study was carried out to determine seed yield and some agronomical parameters of cowpea grown in different row spaces as double crop in Samsun ecological conditions. In the experiment, forage cowpea cultivar Ulkem and Line H-8 grown in four row spaces (20, 35, 50, 65 cm) in a Randomized Split Block Design with three replications. Seeds were sowed after harvesting wheat at July 13, 2017 and 15 July 2018. Seed harvest was made at October 20, 2017 and November 5, 2018. The results showed that seed yields ranged from 765 to 2178 kg ha-1 in 2017 and 397 to 1464 kg ha-1 in 2018. 1000 seed weight ranged from 161.17 to 183.93 g in 2017 and 146.40 to 160.90 g in 2018. In 2017 and 2018, mature pod ratio were 65.7 – 85.8, 30.0 – 60.3% respectively. Pod number per plant was between 5.66-15.00 pods/plant in 2017, 9.50-16.25 pods/plant in 2018. Seed number per pod was ranged from 8.80 to 12.43 seeds/pod in 2017, from 8.00 to 11.50 seeds/pod in 2018. Though the highest seed yields were obtained from 20 cm row space, it is risky cultivated cowpea for seed production as double crop in Samsun conditions because of earlier autumn rainfall and high humidity.

Bobot 1000 Butir dan Kualitas Benih Tujuh Lot Varietas Cabai Open Pollinated (OP)

“…Bobot 1000 butir dipengaruhi oleh pengaruh genetik, lebih besar daripada pengaruh lingkungan (Abdul Nizar & Mulani, 2015;Jalili & Eyvazi, 2015). Hal ini sejalan dengan hasil penelitian yang menyatakan bahwa perbedaan varietas mempengaruhi bobot 1000 butir pada cabai (V. Kumar et al, 2018), kacang tunggak (Can et al, 2020), gandum (Riaziat et al, 2012;Zareian et al, 2012), Brassica (Devi & Sharma, 2018;Rameeh, 2019;Shahri et al, 2011), wijen (Ramazani, 2016), jagung (Jalili & Eyvazi, 2015), terung (Rahman et al, 2017), kacang babi (Wakweya & Meleta, 2016), kacang lentil (Ninou et al, 2019 .Bobot 1000 butir selain dipengaruhi oleh faktor genetik, dipengaruhi juga faktor lingkungan antara lain managemen nutrisi tanaman (Angelopoulou et al, 2019;R. Kumar et al, 2019;Morshedi, 2011;Verma & Mehta, 2019;Vitnor et al, 2015;Zangani et al, 2021), pupuk mikro (Alam & Islam, 2016;Liu & Lal, 2015;Soheili-Movahhed et al, 2019), air (Rebey et al, 2012), priming dan pelleting (Jafar et al, 2012;Verma & Mehta, 2019), jarak tanam (Can et al, 2020;Morshedi, 2011), waktu tanam (Devi & Sharma, 2018;Riaziat et al, 2012), cara penyerbukan (Devi & Sharma, 2018), metode tanam (Rameeh, 2019), populasi per luasan (Ninou et al, 2019;Wakweya & Meleta, 2016).…”

“…(Devi & Sharma, 2018;R. Kumar et al, 2019;Zangani et al, 2021), jinten (Rebey et al, 2012), bunga matahari (Soheili-Movahhed et al, 2019), gandum (Jafar et al, 2012;Riaziat et al, 2012), kacang tunggak (Can et al, 2020), lobak (, canola (Morshedi, 2011;Shahri et al, 2011), jagung (Jalili & Eyvazi, 2015), paprika (Verma & Mehta, 2019), cabai (V. Kumar et al, 2018), sorgum (Ochieng et al, 2013;Zareian et al, 2012), wijen (Anter, 2020;Ramazani, 2016), terung (Rahman et al, 2017), kacang babi (Wakweya & Meleta, 2016), kacang lentil (Ninou et al, 2019), kedelai (Yu et al, 2018), rami (Abdul Nizar & Mulani, 2015), Oleh karena itu dilakukan penelitian terkait bobot 1000 butir dan kualitas benih dari produksi benih cabai.…”

Yield Components of Red Yardlong Bean Pod Genotypes (Vigna unguiculata (L.) ssp. sesquipedalis)

“…In addition, moisture also affected the weight of 1000 seeds. Seeds with higher moisture content resulted in a higher weight of 1000 seeds because seeds with higher water content tend to be denser and heavier [18].…”

Performance and seed quality of several open pollinated chili seed lots

“…Many studies review about the weight of 1000 seed grains, especially for crops that the seed are utilized such as green beans [13], Brassica sp. [14], sunflower [15], wheat [16], cowpea [17], canola [18], corn [19], chili [20], sesame [21], eggplant [22], faba bean [23], lentils [24], soybean [25], etc. Nevertheless, the information regarding chili seed in Indonesia is still limited [26].…”