Advances in Irrigation Agronomy: Fruit Crops by M. K. V. Carr

By M. K. V. Carr

As international strain on water assets intensifies, it truly is crucial that scientists comprehend the position that water performs within the improvement of vegetation and the way such wisdom will be utilized to enhance water productiveness. Linking crop body structure, agronomy and irrigation practices, this booklet makes a speciality of 11 key fruit plants upon which hundreds of thousands of individuals within the tropics and subtropics rely for his or her livelihoods (avocado, cashew, Citrus spp., date palm, lychee, macadamia, mango, olive, papaya, ardour fruit and pineapple). every one bankruptcy reports foreign irrigation examine on somebody fruit crop, making a choice on possibilities for bettering the effectiveness of water allocation and inspiring readers to hyperlink clinical wisdom with functional functions. basically written and good illustrated, this is often a great source for engineers, agronomists and researchers interested in how the productiveness of irrigated agriculture might be enhanced, within the context of weather switch, and the necessity for growers to illustrate solid irrigation practices.

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2 Avocado Introduction The avocado is a fruit of Central America and Mexico where it has been a staple dietary component for the indigenous people for at least 9000 years. For the rest of the world it is a relatively new fruit. The centre of diversification is thought to encompass the rainforests of the subtropical to tropical highland areas of Mexico, Guatemala and Honduras, and probably extends to Pacific coastal Costa Rica. This area includes habitats ranging from sea level to altitudes in excess of 3000 m with an associated diversity of climates.

Hass there was a 10 kg treeÀ1 yield advantage in favour of irrigation at weekly intervals compared with every 28 days (63 compared with 53 kg treeÀ1). Frequent irrigation increased individual fruit weight, particularly with cvs. Ettinger (þ 35 g or 11%) and Hass (þ18 g or 9%). Irrigation began too late to influence fruit set, but there was a small increase in oil content from frequent irrigation. It was concluded that a 21 d irrigation interval was the most appropriate, since it reduced tree size without loss of fruit yield (Lahav and Kamar, 1977).

These methods have been used with several of the fruit crops reviewed in this book, including citrus, date palm, passion fruit and mango. In most practical situations, potential crop evapotranspiration (ETc) is estimated using a formula such as the Penman equation or the Penman–Monteith equation, both of which require standard weather data, or a well-sited evaporation pan such as the USWB Class ‘A’ pan (Epan). , 1998). To convert this to potential water use by a specific crop (ETc) a crop factor (Kc) is needed.

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