lo Xov., 1910.] Potato Exp-:riinciital Fields, igog-10. 



721 



to manure. ^Vhilst most of the other varieties derived little if any benefit 

 from the addition of nitrogen to the dressing of phosphoric acid, this 

 variety was more than doubled. This was no doubt due to the fact that 

 the production of tubers took place early in the spring when the soil con- 

 tamed abundant moisture and may in a measure explain the reason why 

 the nitrogenous manure does not give more satisfactory results on main; 

 crop and late varieties. It always has a marked influence on the growth 

 of the plant and foli.ige, which is not always reflected in the crop of 

 tubers. 



The following varieties gave the most satisfactory retuins. the heaviest 

 yields for each being as follows: — 



Adirondak is identical with the variety grown under the name of 

 Excelsior. It is a medium early, produces very few small tubers, is a 

 good keeper and very suitable for export. 



Brownell's Beauty is also an earlv variety, good quality, and is de- 

 serving of more attention than it recei\es for early crop. In connexion 

 with this variety it may be stated that one or two late maturing varieties 

 are often supplied in error for Brow-nell's Beauty, with the result that 

 growers are disappointed with the crop and give the potato a bad name. 



The heaviest return from all sections was obtained from Green Moun- 

 tam, a white potato very similar in appearance to Carman. This variety 

 has proved itself a consistent cropper in every test and in a great variety 

 of soils. In comi^arison with potatoes of the Up-to-Date type it has manv 

 points tO' recommend it. It is whiter in the flesh, finer in texture, doe.s 

 not produce .so many small tubers, and is not so liable to second growth. 



Broadford Plot (Mr. A. Zwar'sV 



This plot was planted on 29th October, 1909. The .soil was volcanic 

 of rather clayey nature. 



The .seed was not in good condition at the time of planting owing to 

 having sprouted and receiving a check. This resulted in a large number 

 of misses, averaging in .some sections 50 per cent. The calculations of 

 yields are based upon the number of plants per acre. 



T.\BLE L. — Eeturns of Broadford Plot. 



