Quote:
Originally Posted by louis14
This is the cold season here in Northern Thailand, the night temperature has fallen to around seven degrees Celsius and damp. I find that my Leb Mue nam and Gros Michel pseudostem leaves are rather yellow as you can see in the photos I took today. These new plants have been in the ground for eight months and have started flowering in some cases. Our sandy soil is pretty dry right now, we have been watering regularly but not overdoing it. The plants were fertilized with 15-15-15 and complements during the rainy season and they thrived. We are one month into the dry winter season. Are we doing anything wrong? Many thanks for any advice.
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What 'compliments' are you giving the plants? What is the soil Ph? ... This could be sulfur, iron, & magnesium deficiency. This may be due to a 'soil lockup' or irrigation water leching the minors away.
Try a test of foliar spray with the minor elements on a few of the plants to see if there is any immediate improvement of plant color and new leaves. Anyway, a foliar spraying with fertilizer & minors should help the plants until the cause is corrected.