Bonsai of Watermelon Automatic

superquark After germination the plants stretched quite a bit, so I: - moved them outside to have lower night temperature (14°C instead of 22°C) - added a cold (4000K) grow light (LED full spectrum spot light, 575lm, CRI 90) to increase light exposure from natural sun to 16h/d I measured the soil pH (which was supposed to be 6.4) with a calibrated probe and found out it is more like 7.0 so I: - started to give them a few drops of very low concetration rain water + nutrients solution (2.0-0.9-1.4 N-P-K) + a couple of drops of lemon juice to lower the PH On day 11 it rained a lot so I: - moved the plants back inside lo let the water saturated soil dry out a bit. On day 12 I found some aphids and a leaf miner so I - sprayed a 12.5 mg/l solution of Deltamethrin

superquark On day 16 plants were: - transplanted into bigger pots with a better soil with a PH value of 6.3 - watered with a 2.0-0.9-1.4 NPK solution + micronutrients On day 18 plants were: - mooved back outiside

superquark On day 22 plants were: - topped - sprayed a 15.3 mg/l solution of Deltamethrin On day 23 plants were: - watered with a 2.0-0.9-1.4 NPK + micronutrients PH 6.0 solution On day 24 plant were: - transplanted into bigger pots - trained with wires This plant is showing yellowing of lower tow leaves. Still trying to figure out why.

superquark On day 29 I: - measured the soil acidity and it was very low @ PH 5.5 - washed the soil with a lot of tap water @ PH 7.4 On day 30 I: - measured the acidity again and it was @ PH 5.9 - removed the yellow leaves and the branches growing on the lower side - adjusted the wired to train the plants On day 31 I: - watered the plants with a solution of 7-3-5 NPK + micronutrients + hydrated lime to increase PH

superquark —

superquark On day 44 plant where: - watered with a solution of 10-10-10 NPK + micronutrient + hydrated lime

superquark On day 51 plants were: - watered with a solution of NPK 4-6-8 + micronutrients + Bionova PH+ - put under warmer and more powerful light (2452lm 2700k) I'm still struggling with the pH even if up to last week I always addded hydrated lime to the watering solution. I switched to Bionova PH+ (potassium hydroxide) to achieve faster pH increase.

superquark —

superquark I finally managed to get the pH right using potassium hydroxide. I'm adjusting the wires to train the plants every couple of days. This week I will feed them with a solution of NPK 5-7.5-10 + micronutrients.

superquark This week I'm just watering the plants with tap water, removing some leaves, and fighting the parasites.