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Carol J. Lovatt

The goal of this research was to identify the role essential nutrients play in the physiology of tree crops, and then to apply the nutrient as a foliar fertilizer to stimulate a specific metabolic process at phenological stages when nutrient demand is high. This approach has proven successful. A single winter prebloom foliar application of nitrogen as low-biuret urea [0.16 kg N/tree (0.35 lb N/tree)] to 30-year-old `Washington' navel orange (Citrus sinensis L. Osbeck) trees during flower initiation significantly increased yield and fruit number per tree for each of 3 consecutive years (P ≤ 0.05). The number of commercially valuable largesize fruit also increased significantly with yield increases (r 2 = 0.88). Sodium tetraborate applied foliarly to `Hass' avocado (Persea americana Mill.) trees at the cauliflower stage of inflorescence development (elongation of inflorescence secondary axes, pollen and ovule development) increased the number of pollen tubes reaching the ovule, ovule viability and cumulative yield (P ≤ 0.05). Additional examples are presented.

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Shigenori Yaguchi, Tetsuya Nakajima, Toshihisa Sumi, Naoki Yamauchi and Masayoshi Shigyo

, 1.2 mL of 25 m m sodium tetraborate (in H 2 SO 4 ) was added. The tube was placed in a boiling water bath for 10 min followed by cooling in an ice-water bath until room temperature was reached. When the mixture reached 20 °C, 40 μL of the carbazole

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Libin Wang, Elizabeth A. Baldwin, Zhifang Yu and Jinhe Bai

, MgCl 2 , polyvinylpyrrolidone (PVP), dithiothreitol (DTT), phenylmethylsµlfonyl fluoride (PMSF), benzamidine, aminocaproic acid, sodium tetraborate, and Tween 20 were purchased from Sigma-Aldrich (St. Louis, MO). Glycerol, boric acid, sodium phosphate

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Carol J. Lovatt

/acre, 46% N, ≤ 0.25% biuret) and boron [B (1.4 lb/acre B as sodium tetraborate)] applied at the cauliflower stage of inflorescence development, about the time of gametogenesis (pollen, ovule, and egg formation) ( Salazar-García et al., 1998 ), increased

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Seenivasan Natarajan and Jeff S. Kuehny

−1 sodium tetraborate were used to remove phenolics. Samples were boiled for 3 min and were then centrifuged at 14,000 g n for 6 min. The supernatant was collected and stored at −80 °C. Total protein content from leaf extract was determined

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Javier Fernandez-Salvador, Bernadine C. Strik and David R. Bryla

based on sodium tetraborate ( OMRI, 2013 ). The growth of primocanes in blackberry is mainly dependent on nutrients available in the soil or from newly applied fertilizer, in contrast to floricanes where a large portion of the initial growth is dependent