Garcia Alonso, Grover Kulbhushan, VanLeeuwen Dawn, Stringam Blair, Schutte Brian
Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, NM 88003, USA.
Department of Economics, Applied Statistics and International Business, New Mexico State University, Las Cruces, NM 88003, USA.
Plants (Basel). 2023 Jun 29;12(13):2486. doi: 10.3390/plants12132486.
Guar is a potential crop that can be grown as a forage or as a seed crop in arid to semi-arid regions due to its low water requirements and tolerance to heat. Optimizing irrigation water use is important for making alternative crops such as guar a sustainable option. Amendments such as biogenic silica, a sedimentary rock from a biogenic source such as fossils, may help plants tolerate water stress due to reduced irrigation. The objective of the current study was to evaluate seed yield and attribute components and agronomic and physiological parameters for four guar genotypes (Matador, Kinman, Lewis, and NMSU 15-G1) under five drip irrigation regimes (I-normal irrigation, I-no irrigation at 75% pod formation, I-no irrigation at 50% and 75% pod formation, I-terminate irrigation at flowering, and I-terminate irrigation at flowering + biogenic silica amendment) at Las Cruces in southern New Mexico, USA, from 2016 to 2018. On average, the I irrigation regime produced the highest guar seed yield (2715 kg ha) followed by I (2469 kg ha) from 2016 to 2018. As compared to the I regime, the I and I regimes resulted in a 20.8% and 23.4% decline in guar seed yield, respectively, on average from 2016 to 2018. The results suggest that the addition of biogenic silica might help to improve guar seed yield under reduced irrigation conditions and can produce comparable yields with an average of 300 mm of irrigation during the growing season in the southern New Mexico region of the Southwest US.
瓜尔豆是一种有潜力的作物，因其需水量低且耐热，可在干旱至半干旱地区作为饲料作物或种子作物种植。优化灌溉用水对于使瓜尔豆等替代作物成为可持续选择至关重要。诸如生物源二氧化硅（一种来自化石等生物源的沉积岩）之类的改良剂，可能有助于植物耐受因灌溉减少而导致的水分胁迫。本研究的目的是在美国新墨西哥州南部的拉斯克鲁塞斯，于2016年至2018年期间，评估四种瓜尔豆基因型（斗牛士、金曼、刘易斯和新墨西哥州立大学15 - G1）在五种滴灌制度（I - 正常灌溉、I - 在75%豆荚形成期不灌溉、I - 在50%和75%豆荚形成期不灌溉、I - 在开花期终止灌溉、以及I - 在开花期终止灌溉 + 生物源二氧化硅改良剂）下的种子产量、产量构成因素以及农艺和生理参数。平均而言，在2016年至2018年期间，I灌溉制度产生了最高的瓜尔豆种子产量（2715千克/公顷），其次是I（2469千克/公顷）。与I制度相比，I和I制度在2016年至2018年期间瓜尔豆种子产量平均分别下降了20.8%和23.4%。结果表明，添加生物源二氧化硅可能有助于在减少灌溉条件下提高瓜尔豆种子产量，并且在美国西南部新墨西哥州南部地区生长季节平均灌溉300毫米的情况下能够产生相当的产量。
