Rawaa G. Al-Hlfie, et al. “THE EFFECT OF IRRIGATION INTERVAL AND SOME ENVIRONMENTAL SUSTAINABILITY FACTORS ON GROWTH AND PRODUCTION OF COWPEA PLANTS”. IRAQI JOURNAL OF AGRICULTURAL SCIENCES, vol. 56, no. 4, Aug. 2025, pp. 1459-6, https://doi.org/10.36103/a22jw446.